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Cordierite

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CLB102568

Cordierite

Description Tabs

Description
Locality: 
Bodenmais, Lower Bavaria, Bavaria, Germany
Size Range: 
Small cabinet (7-10 cm)
Size: 
8 × 7 × 4.7 cm
Largest Crystal: 
2.00cm
Description

Nice old specimen. Labeled as 'cordierite' but I think, the big 2 cm crystal might also be ghanite. The small black one fits better.

Mineral Data
What's on the rock

Cordierite

Formula: 
(Mg,Fe)2Al3(AlSi5O18)
Strunz: 
9.CJ.10
Crystal System: 
Orthorhombic
Hardness: 
7.0 - 7.5
Type Locality: 
Großer Arber, Bayerisch Eisenstein, Lower Bavaria, Bavaria, Germany

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